Free Amazon review analyzer.
Paste an ASIN to analyze Amazon reviews in minutes. Cosmy reads up to 500 of them, finds the themes buyers keep raising, and shows which ones your listing never mentions.
Paste a 10-character ASIN or an Amazon product link.
Free account, no credit card. Works on 8 Amazon marketplaces.
Every theme your buyers raise. And what your listing misses.
Shopper Voice score
A 0 to 100 score for how well your listing says what your reviewers say.
Sentiment, theme by theme
What buyers praise and what they complain about, with how many reviewers raised each theme. Sentiment analysis you can act on.
The gaps
The themes that matter to buyers but are missing from your title, bullets and description.
A rewrite in their words
Those themes feed straight into a publish-ready rewrite, in the words your buyers already use.

Ninja CREAMi 7-in-1 Ice Cream Maker, NC299AMZ
B09QV24FFZ · amazon.com
Shopper Voice score
64/100
500 reviews read. 2 themes buyers raise that the listing never mentions.
Amazon rating
4.54,301 ratings
- 578%
- 49%
- 34%
- 22%
- 17%
Creamy, scoop-shop texturePraise · 142 reviewers (28%)In your listing
“Tastes like it came from a scoop shop.”
“Creamier than any pint I've bought.”
“Needed one re-spin, then perfectly smooth.”
One touch, easy to usePraise · 96 reviewers (19%)In your listing
“Press one button and walk away.”
“My kids make their own sorbet now.”
Worth it next to store-bought pintsPraise · 88 reviewers (18%)Missing from your listing
“Paid for itself in protein ice cream.”
“Pricey once you add extra pints.”
“Cheaper per pint than the fancy brands.”
Loud while it runsComplaint · 74 reviewers (15%)Missing from your listing
“Sounds like a jet engine for two minutes.”
“Loud, but it's over fast.”
“Didn't expect it to be this noisy.”
Stopped working after a few monthsComplaint · 61 reviewers (12%)Not a listing issue
“Stopped spinning after four months.”
“Started buzzing, then quit.”
Real, but no copy fixes it, so Cosmy keeps it out of the rewrite.
Wish it came with a second pintComplaint · 2 reviewers (1%)Too few reviews to count
“Great, but one pint isn't enough.”
Raised by a handful of reviewers. Not a pattern, so the score ignores it.
Example data. Product, rating and rating split from Amazon.com.
How to analyze Amazon reviews in 3 steps.
- 1
Paste an ASIN
Yours, or a competitor's. Any product on 8 Amazon marketplaces.
- 2
Cosmy reads the reviews
Up to 500 reviews, grouped into the themes buyers keep coming back to.
- 3
Fix the gaps
See what your listing leaves out, then get a rewrite that says it.
Your best arguments are already in your reviews.
Buyers tell you, in their own words, why they bought and what almost stopped them. When your listing doesn't say the same things, the strongest reasons to buy never reach the next shopper. Most tools for extracting product insights from Amazon reviews stop at sentiment. Cosmy checks your listing against what buyers say, then rewrites it. Run it on a competitor and you also see what their buyers complain about.
Questions, answered.
Still unsure? Book a demo.
Is this Amazon review analyzer free?
Yes. Create a free Cosmy account, no credit card needed. The Free plan includes 5 credits a month, and one analysis uses one credit.
How do I analyze Amazon reviews?
Paste the product's ASIN or Amazon link. Cosmy reads up to 500 of its reviews, groups them into themes, counts how many buyers raised each one, and checks whether your title, bullets and description mention them.
Does it do sentiment analysis on Amazon reviews?
Yes. Every theme is marked as praise or complaint and counted, so you see what sits behind the star rating, not just the average.
How many reviews does it read?
Up to 500 reviews per product.
Can I analyze a competitor's product?
Yes. It works on any ASIN, so you can see what a competitor's buyers praise and complain about.
Which marketplaces are supported?
8 Amazon marketplaces: Canada, France, Germany, India, Italy, Spain, the UK and the US.
What else does the analysis include?
Every analysis also scores your listing for Alexa for Shopping and CoSMo, at the same time, and can rewrite your title, item highlights, bullets and description, ready to publish.
See what your buyers are telling you.
Paste an ASIN. Your first analyses are free.
Paste a 10-character ASIN or an Amazon product link.